The coverup was certainly planned at the highest levels, but that was planning separate from the planning for the tactics to be used to accomplish the mission.
Considering there is no evidence of a government 911 coverup, you have no leg to stand on.
Personally, I think you made that up that false story because you have been caught making up stories by others as well. You became upset that Wally Miller was very angry and he was very angry because people like you were taking his comments out of context and misrepresenting his position. After all, I posted his video interview for all to see and hear.